Facebook is expanding to the U.S. the controversial Promoted Posts feature that lets users pay to get their posts more visibility in the news feed. It will cost $7 per post and Facebook hopes it will be used for garage sales, parties, wedding photos and other important announcements.

Promoted Posts has already been rolled out to 20 other countries and is available to people with fewer than 5,000 total friends and subscribers. Promoted Posts could help surface important announcements and earn Facebook money. However, Promoted Posts could change the atmosphere of Facebook from one where the most beloved content gets seen most to one where the rich can dominate the news feed.

Facebook first began testing the product, then called Highlight, in May in New Zealand. It’s still testing price points for the U.S. so it could go up or down from $7, and cost varies across international markets to sync with what’s appropriate for local economies.

HOW PROMOTED POSTS GET THE WORD OUT

After you publish a post, a Promote button will let you pay to bump up its rank in the news feed — making it appear both higher in the feed, and to a larger portion of your friends. Unpromoted posts are typically only seen by 12-16 percent of your friends.

After you Promote a post, it will be marked “Sponsored,” and you can check to see how many more people saw it because you paid. For example, you’d see “So far your post has had 3.8x as many views because you promoted it.”

IS PAY-TO-PLAY OKAY?

Facebook is becoming a critical one-to-many communication medium for people. Often we’re just sharing fun things that we don’t desperately need eyeballs on, but other times a better news feed position could really help. If I’m trying to sell all my possessions before moving to Thailand, Promoted Posts could be a cost-effective way of making sure more friends know about my garage sale. Raising money for charity or looking for bone marrow donors are some other clearly positive applications.